dengan caranya,tolong bantu

= (2 (5 - akar2))/5 + akar2(5 - akar2)
=(10 - 2akar2)/25-2
=10/23 - 2akar2/23

2 / 5 + √2
= 2 (5 - √2) / (5 + √2)(5 - √2)
= 2 (5 - √2) / 25 - 2
= 2 (5 - √2) / 23
= 10 - 2√2 / 23